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Junior App Developer Jobs in Toronto, ON (NOW HIRING)

Reactiv

Mobile Developer

Toronto, ON

About the Role We're looking for a Junior to Intermediate React Native Mobile Developer to help ... Experience submitting or releasing apps to the App Store or Google Play. * Familiarity with CI/CD ...

Reactiv

Front-end Developer

Toronto, ON

  • Medical

  • Dental

  • PTO

About the Role We're looking for a Junior to Intermediate Frontend Developer to help build and ... Occasionally contribute to our React Native mobile app as you grow. * Help keep our frontend fast ...

Royal Bank of Canada

Lead Software Developer

Toronto, ON · On-site +1

Next.js (App Router, Server Components, Streaming SSR), React Router v6+, and testing with Jest ... junior/intermediate developers, and involvement in hiring or onboarding * Strong command of HTML5 ...

Hootsuite

Senior Salesforce Developer

Toronto, ON · Remote

Additionally, you will independently conduct code reviews and guide junior team members towards ... App Builder triggers, batch apex and Salesforce APIs at a large organization. * 5+ years of ...

IKO Industries, Inc

Salesforce Senior Developer

Mississauga, ON · On-site

CA$90K - CA$105K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • PTO

Provide technical guidance and mentorship to junior and mid-level Salesforce developers. * Assist ... Exposure to working with the Salesforce Mobile app * Exposure to Agile/Scrum methodologies is ...

CIBC

Senior PeopleSoft Developer

Toronto, ON · Hybrid

  • Retirement

Provide technical guidance and mentorship to junior developers. * Analyze business requirements ... Expert knowledge of PeopleSoft modules, tools (App Designer, SQR, PeopleCode), integration ...

CIBC US

Senior PeopleSoft Developer

Toronto, ON · Hybrid

  • Retirement

Provide technical guidance and mentorship to junior developers. * Analyze business requirements ... Expert knowledge of PeopleSoft modules, tools (App Designer, SQR, PeopleCode), integration ...

DoorDash Canada

Senior Software Engineer, iOS

Toronto, ON · On-site +1

... app that's used by millions of people and critical to local entrepreneurs building their online presence. We expect Senior Engineers to be able to run projects end to end and mentor their junior to ...

Capital One

Staff Software Engineer

Toronto, ON · Hybrid

CA$172K - CA$197K/yr

Act as a tech lead developer owning technical design and development of cross-functional, multi ... Provide mentorship to junior and intermediate associates through engineering best practises and ...

Capital One

Staff Software Engineer

Toronto, ON · Hybrid

CA$173K - CA$197K/yr

Act as a tech lead developer owning technical design and development of cross-functional, multi ... Provide mentorship to junior and intermediate associates through engineering best practises and ...

Capital One

Staff Software Engineer

Toronto, ON · Hybrid

CA$173K - CA$197K/yr

Act as a tech lead developer owning technical design and development of cross-functional, multi ... Provide mentorship to junior and intermediate associates through engineering best practises and ...

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All JobsApp Developer JobsJunior App Developer JobsJunior App Developer Jobs in Toronto, ON

Junior App Developer information

What does a junior app developer do?

A Junior App Developer is an entry-level professional who assists in the design, development, testing, and maintenance of mobile or web applications. They typically work under the supervision of more experienced developers, writing code, fixing bugs, and learning about various programming languages and development tools. Junior App Developers also collaborate with team members to understand user requirements and contribute to the overall functionality and improvement of applications.

What are the key skills and qualifications needed to thrive as a junior app developer?

To thrive as a Junior App Developer, you need a solid grasp of programming languages (such as Java, Swift, or JavaScript), understanding of software development principles, and a relevant degree or coding bootcamp experience. Familiarity with integrated development environments (IDEs), version control systems like Git, and knowledge of frameworks such as React Native or Flutter are typically expected. Problem-solving abilities, teamwork, adaptability, and effective communication help set candidates apart in collaborative and fast-changing environments. These skills and qualities ensure you can build reliable applications, work well with teammates, and adapt to evolving project requirements.

What types of projects and technologies do junior app developers typically work on in their first year?

As a Junior App Developer, you will often start by working on smaller features, bug fixes, or assisting with app maintenance under the guidance of more experienced developers. Common technologies include popular programming languages like Java, Swift, Kotlin, or JavaScript, and frameworks such as React Native or Flutter, depending on whether your team focuses on iOS, Android, or cross-platform apps. You'll likely be involved in code reviews, testing, and collaborating with designers and product managers to ensure your work aligns with user needs and business goals. This hands-on experience helps you build foundational skills and prepares you for more complex assignments as you gain confidence.

What is the difference between Junior App Developer vs Mobile App Developer?

AspectJunior App DeveloperMobile App Developer
Required CredentialsTypically an associate degree or bootcamp certification, some coding experienceSimilar; often a degree in computer science or related field
Work EnvironmentEntry-level, team-based projects, supervised tasksDeveloping, testing, and maintaining mobile applications for various platforms
Employer & Industry UsageStartups, small to medium companies, tech firmsTech companies, app development agencies, startups
Common Search & ComparisonYesYes

The main difference between a Junior App Developer and a Mobile App Developer lies in experience level and scope. Junior App Developers are entry-level, focusing on learning and assisting in app projects, while Mobile App Developers typically have more experience and handle full app development processes. Both roles often require similar credentials and work in similar environments, but Mobile App Developers usually take on more complex tasks and responsibilities.

What are the most commonly searched types of App Developer jobs in Toronto, ON?

The most popular types of App Developer jobs in Toronto, ON are:

What are popular job titles related to Junior App Developer jobs in Toronto, ON?

For Junior App Developer jobs in Toronto, ON, the most frequently searched job titles are:

What job categories do people searching Junior App Developer jobs in Toronto, ON look for?

The top searched job categories for Junior App Developer jobs in Toronto, ON are:

Junior App Developer jobs near you
Infographic showing various Junior App Developer job openings in Toronto, ON as of August 2026, with employment types broken down into 83% Full Time, and 17% Contract. Highlights an 100% In-person job distribution.

Mobile Developer

Reactiv

Toronto, ON

Full-time

Re-posted 7 days ago

Job description

About Reactiv

Reactiv is an AI-powered platform that helps Shopify merchants build beautifully branded, high-converting mobile apps without the usual complexity. At the core of what we do is Reactiv Clips, a feature that removes the need for app downloads so brands can deliver fully customized app experiences instantly and without friction. By lowering the barrier to great mobile experiences, we're building the future of mobile commerce, and we're growing our engineering team to help shape what comes next.


About the Role

We're looking for a Junior to Intermediate React Native Mobile Developer to help build and improve the mobile apps our merchants rely on every day. You'll ship real features from the get go with support from an amazing group of ex-Shopify mobile engineers to give you mentorship and help you grow. This is a hands-on role for someone earlier in their career who wants to develop into a strong mobile engineer in a collaborative, hybrid environment. You don't need to check every box below; if you're solid on the fundamentals and eager to learn the rest, we want to hear from you.


What You'll Do

  • Build and maintain features for our iOS and Android apps using React Native.
  • Collaborate with product, design, and other engineers to define, design, and ship new features.
  • Help keep our apps fast and reliable by improving responsiveness and performance.
  • Troubleshoot and fix bugs to improve the experience for merchants and their customers.
  • Take part in code reviews, both giving and receiving feedback, as part of how we maintain quality.
  • Learn and adopt new tools and techniques as the mobile ecosystem evolves.


What We're Looking For


Required

  • Working knowledge of React Native and a solid grasp of React fundamentals.
  • Comfortable writing TypeScript, or strong JavaScript with a willingness to pick up TypeScript quickly.
  • Familiarity with the mobile development lifecycle, from building a feature to seeing it released.
  • Strong problem-solving instincts and eagerness to learn in a fast-moving, collaborative team.
  • Roughly 2 to 4 years of experience building mobile or web applications, or equivalent project and portfolio work.


Nice to Have

  • Exposure to Typescript / Node.js on the backend.
  • Familiarity with the Shopify ecosystem, or an interest in e-commerce.
  • Experience with push notifications and cloud messaging APIs.
  • Experience with Reanimated, or building smooth animations and interactions.
  • Some exposure to native iOS (Swift) or Android (Kotlin).
  • Experience submitting or releasing apps to the App Store or Google Play.
  • Familiarity with CI/CD practices.
  • Experience writing automated tests or unit tests.
  • An eye for UI/UX and platform interface guidelines.


Why Join Us

  • Mentorship and growth: You'll have regular code review, pairing, and support from experienced engineers, with a clear path from junior to intermediate and beyond.
  • Level up with AI: We're constantly exploring how AI can make us better engineers, and you'll have real freedom to experiment with cutting-edge tools rather than wait for permission. It's a fast way to grow.
  • Real impact: The apps you work on are used by merchants and their customers around the world.
  • Hybrid work environment: We believe in a hybrid model to create opportunities for intentional in-person collaboration (and mentorship) while balancing that with the deep focus time that comes from working remotely. You'll join the team in our Toronto office 2 to 3 days a week with the flexibility to work remotely the rest of the time

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